Agamopus Bates, 1887

Costa-Silva, Vinícius, Carvalho, Edrielly & Vaz-De, Fernando Z., 2022, A taxonomic revision of the New World genus Agamopus Bates, 1887 (Coleoptera: Scarabaeinae: Ateuchini), European Journal of Taxonomy 806 (1), pp. 64-89 : 67

Genus Agamopus Bates, 1887

Agamopus Bates, 1887: 42 (original description).

Agamopus – Gillet 1911: 49 (catalogue). — Blackwelder 1944: 203 (catalogue); 1973: 6 (catalogue). — Pereira 1947: 4 (key to species); 1954: 56 (key to the genera of American Dichotomiina). — Halffter & Martínez 1968: 226 (taxonomic revision). — Howden & Young 1981: 40 (diagnosis). — Medina & Lopera-Toro 2000: 301, 306 (key to the Scarabaeinae of Colombia). — Medina et al. 2001: 133 (dung beetle species from Colombia). — Halffter 2003: 24 (redescription). — Vaz-de- Mello et al. 2011: 4, 8, 15, 23, 30, 38, 44 (key to the genera of Scarabaeinae ). — Boilly & Vaz-de- Mello 2013: 106 (key to the Scarabaeinae of Guiana). — Cupello & Vaz-de-Mello 2018: 13, 17 (list of genus-group names proposed for ‘ Canthon sensu lato’).

Type species

Agamopus lampros Bates, 1887 , by original monotypy.

Diagnosis

Agamopus belongs to the tribe Ateuchini , which is recognized by the transverse clypeal process; hypomeron with a transverse carina and deep anterior excavation; apex of protibiae truncated in a straight angle (see Vaz-de-Mello 2008); metatibiae of males with an elongate apical process ( Figs 4C – black arrow; 6A, C); and by the transverse sulcus on the pygidium (as in Figs 4D and 9E ). The latter two characters can be used to separate Agamopus from all other genera in the tribe ( Halffter & Martínez 1968; Howden & Young 1981; Vaz-de-Mello et al. 2011; Boilly & Vaz-de-Mello 2013). For a comprehensive description of the genus Agamopus , see Halffter & Martínez (1968) and Howden & Young (1981).

Figures

Fig. 4. Agamopus joker sp. nov. Holotype, ♂ (CEMT). A. Habitus, dorsal view. B. Habitus, ventral view (black arrow indicating the longitudinal keel slightly marked). C. Hind tibia (black arrow indicating the elongate apical process in the metatibia). D. Sulcus in the pygidium. E. Aedeagus, lateral view (black arrow indicating the gibbosity near base). F. Aedeagus, dorsal view. G. Labels. Scale bars = 1 mm.

Fig. 9. A‒D. Agamopus viridis Boucomont, 1928. Holotype, ♀ (MNHN). A. Habitus, dorsal view. B. Habitus, ventral view. C. Habitus, lateral view. D. Labels. E. Sulcus of the pygidium in an ordinary specimen (CEMT). Photographs A‒D: Christophe Rivier, MNHN.